The monumental home of Prussia’s eccentric "Cannon King."

A venerated grave atop an ancient royal hill, often attributed to the last king of Singapura.

Rainbow shutters decorate this former police station.

This fountain was once heralded as the largest in the world.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

The most playful of the life-sized statues that make up Singapore's "People of the River."

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Khmer Rouge's high security prison.

One of the biggest markets in Asia, under one of the continent's largest domes.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

A monolithic monument in Greater London.

Abstract dinosaur models in London.

The remains of a historic football stadium that once hosted 50,000 spectators.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

A 142-foot-tall Q-tip on Bristol's skyline.

Banksy's image of a naked man dangling from the window of a sex health clinic.